See also:

• Science: Astronomy: Calendars and Timekeeping  (55)
• Science: Social Sciences: Archaeology: Topics: Archaeoastronomy  (90)

Aztec Calendar: - Gregorian-to-Aztec date conversion, with Aztec astrological notes.

The Aztec Calendar - Pointer/Homepage: - Site breaks down all aspects of the Aztec calendric syste.

Early Aztec Understandings: - A sixteenth-century account of the religion and history of the Colhua Mexica, or Aztecs.

Historical Science Publishing - Aztec Calendar Handbook: - A "technical manual" for the Aztec Calendar and Aztec's perception of God by Dr. Randall C. Jimenez and Richard Graeber.